mfd: cs42l43: Fix wrong GPIO_FN_SEL and SPI_CLK_CONFIG1 defaults

Two regs have wrong values in existing fields, change them to match
the datasheet.

Fixes: ace6d144 ("mfd: cs42l43: Add support for cs42l43 core driver")

Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20240301101547.2136948-1-mstrozek@opensource.cirrus.com


Signed-off-by: Lee Jones <lee@kernel.org>